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Chapter 18 Vocab

Astrnomy

TermDefinition
Astronomy is the study of the universe.
Year is the time required for the Earth orbit once around the sun.
Month is roughly the amount of time required for the moon to orbit once around the Earth.
Day is the time required for the Earth to rotate once on its axis.
Telescope an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation.
Refracting Telescope a telescope that uses a set of lenses to gather and focus light from distant objects.
Reflecting Telescope a telescope that uses a curved mirror to gather and focus light from distant objects.
Electromagnetic Spectrum all of the frequencies or wavelengths of electromagnetic radiation.
Constellation a region of the sky that contains a recognizable star pattern and that is used to describe the location of objects in space.
Horizon
Light-Year
Zenith
Altitude
Created by: BaconBoi
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